Support rack



FIG. 1 is a front perspective of a support rack according to our new design;

FIG. 2 is another front perspective thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right elevational view thereof;

FIG. 6 is a left elevational view thereof;

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a rear elevational view thereof.

The broken lines in the drawings depict portions of the support rack that form no part of the claimed design. 

CLAIM We claim the ornamental design for a support rack, as shown and described. 